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High-damage tolerance C/C-SiC composite material as well as preparation method and regulation and control method thereof

A composite material and damage tolerance technology, which is applied in the field of C/C-SiC composite materials with high fracture strain and its preparation and regulation, can solve the problems of poor toughness and low mechanical properties, and achieve improved density and improved mechanical properties , Reduce the effect of silicification damage

Inactive Publication Date: 2019-01-18
HUNAN SHIXIN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies and defects mentioned in the above background technology, to provide a high damage tolerance C / C-SiC composite material, by regulating the arrangement direction of fiber bundles in carbon fiber cloth and carbon fibers in different fiber arrangement directions The volume fraction of the cloth increases the failure strain when the material breaks, so that the material has a higher damage tolerance and solves the problem of low overall mechanical properties and poor toughness of the material

Method used

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  • High-damage tolerance C/C-SiC composite material as well as preparation method and regulation and control method thereof
  • High-damage tolerance C/C-SiC composite material as well as preparation method and regulation and control method thereof
  • High-damage tolerance C/C-SiC composite material as well as preparation method and regulation and control method thereof

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Experimental program
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Embodiment 1

[0079] This embodiment provides a high damage tolerance C / C-SiC composite material and its preparation and regulation method. see figure 1 , is a schematic diagram of the process of the high damage tolerance C / C-SiC composite product of the present invention, and the specific preparation method is as follows:

[0080] Degumming treatment: put the above-mentioned carbon fiber cloth (plain cloth) in a vacuum sintering furnace, under the protection of nitrogen, rapidly heat up to 800 °C at a heating rate of 20 °C / min, and then cool the fiber to room temperature with the furnace to obtain Degummed carbon fiber woven cloth;

[0081] S1. Pre-impregnation-drying treatment: apply the impregnating solution on the degummed carbon fiber woven cloth to treat it. After the treatment is completed, arrange the obtained carbon fiber weaving in a constant temperature oven at 60°C for drying for 24 hours; the impregnating solution Contains A and B, the configuration process is as follows: Dis...

Embodiment 2

[0088] This embodiment provides a high damage tolerance C / C-SiC composite material and its preparation and regulation method. see figure 1 , is a schematic diagram of the process of the high damage tolerance C / C-SiC composite product of the present invention, and the specific preparation method is as follows:

[0089] Degumming treatment: put the above-mentioned carbon fiber cloth (plain cloth) in a vacuum sintering furnace, under the protection of nitrogen, rapidly heat up to 800 °C at a heating rate of 20 °C / min, and then cool the fiber to room temperature with the furnace to obtain Degummed carbon fiber woven cloth;

[0090] S1. Pre-impregnation-drying treatment: brush the impregnating liquid on the degummed carbon fiber woven cloth to process it. After the treatment is completed, arrange the obtained carbon fiber weaving in a constant temperature oven at 60°C for drying for 24 hours; the impregnating liquid Contains A and B, the configuration process is as follows: Disso...

Embodiment 3

[0097] This embodiment provides a high damage tolerance C / C-SiC composite material and its preparation and regulation method. see figure 1 , is a schematic diagram of the process of the high damage tolerance C / C-SiC composite product of the present invention, and the specific preparation method is as follows:

[0098] Degumming treatment: put the above-mentioned carbon fiber cloth (plain cloth) in a vacuum sintering furnace, under the protection of nitrogen, rapidly heat up to 800 °C at a heating rate of 20 °C / min, and then cool the fiber to room temperature with the furnace to obtain Degummed carbon fiber woven cloth;

[0099] S1. Pre-impregnation-drying treatment: brush the impregnating liquid on the degummed carbon fiber woven cloth to process it. After the treatment is completed, arrange the obtained carbon fiber weaving in a constant temperature oven at 60°C for drying for 24 hours; the impregnating liquid Contains A and B, the configuration process is as follows: Disso...

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Abstract

The invention relates to the technical field of C / C-SiC composite materials and discloses a high-damage tolerance C / C-SiC composite material as well as a preparation method and a regulation and control method thereof. According to the preparation method, the composite material is prepared from carbon fiber cloth, as well as high-molecular polymers and silicon powder serving as raw materials through processes of pre-dipping, clipping, stacking, compression, curing, carbonization, melt infiltration and the like; the carbon fiber cloth comprises carbon fiber cloth units which are stacked in different layers, and each carbon fiber cloth unit is one or more of carbon fiber cloth with the fiber bundle arrangement angle of 0-15 degrees / 75-90 degrees, and / or one or more of carbon fiber cloth withthe fiber bundle arrangement angle of 15-30 degrees / 60-75 degrees and / or carbon fiber cloth with the fiber bundle arrangement angle of 45 degrees / 45 degrees. The high-damage tolerance C / C-SiC composite material has high compactness, excellent mechanical property, extremely high failure strain and high damage tolerance and is suitable for the fields of high-speed and high-energy carrier transportation, friction braking materials, space structures and the like.

Description

technical field [0001] The invention relates to a C / C-SiC composite material with high damage tolerance and a preparation and control method thereof, in particular to a C / C-SiC composite material with high fracture strain and a preparation and control method thereof. Background technique [0002] Carbon fiber reinforced carbon-silicon carbide dual matrix (C / C-SiC) composites have a series of excellent properties such as light weight, high specific strength, high specific modulus, oxidation resistance, corrosion resistance, high friction coefficient and good thermal conductivity. It well overcomes the shortcomings of C / C brake materials such as the decline of friction coefficient in static and wet environments, and is a very competitive new generation of friction materials. [0003] At present, the methods for preparing C / C-SiC composites mainly include chemical vapor infiltration (CVI), impregnation pyrolysis (PIP), and molten silicon infiltration (LSI). Compared with other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/573C04B35/80C04B35/83C04B35/622
CPCC04B35/806C04B35/573C04B35/622C04B35/83C04B2235/428C04B2235/48C04B2235/5256C04B2235/656C04B2235/77C04B2235/96
Inventor 李杨肖鹏
Owner HUNAN SHIXIN NEW MATERIALS CO LTD
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